--- a/common/autoconf/flags.m4 Fri Sep 30 02:52:36 2016 -0700
+++ b/common/autoconf/flags.m4 Thu Oct 06 13:41:43 2016 +0200
@@ -759,6 +759,10 @@
# on ppc we don't prevent gcc to omit frame pointer but do prevent strict aliasing
$2CFLAGS_JDK="${$2CFLAGS_JDK} -fno-strict-aliasing"
;;
+ s390 )
+ $2COMMON_CCXXFLAGS_JDK="[$]$2COMMON_CCXXFLAGS_JDK -fno-omit-frame-pointer -mbackchain -march=z10"
+ $2CFLAGS_JDK="${$2CFLAGS_JDK} -fno-strict-aliasing"
+ ;;
* )
$2COMMON_CCXXFLAGS_JDK="[$]$2COMMON_CCXXFLAGS_JDK -fno-omit-frame-pointer"
$2CFLAGS_JDK="${$2CFLAGS_JDK} -fno-strict-aliasing"
@@ -940,6 +944,10 @@
# Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
$2JVM_CFLAGS="[$]$2JVM_CFLAGS -mcpu=power7 -mtune=power8"
fi
+ elif test "x$OPENJDK_$1_CPU" = xs390x; then
+ if test "x$OPENJDK_$1_OS" = xlinux; then
+ $2JVM_CFLAGS="[$]$2JVM_CFLAGS -mbackchain -march=z10"
+ fi
fi
if test "x$OPENJDK_$1_CPU_ENDIAN" = xlittle; then